Blackburn, P. (Esq.) Logan Castle, St. Thomas- in- the- vale 

 -  1838. 
<br/><br/> Logan Castle 
<br/><br/> The diagram represents one acre of land now belonging to P. Blackburn Esq., part of Logan Castle in the parish of St. Thomas- in- the- vale. Surveyed by John M. Smith, 1838.